The typical asking rate per listing is in the $20's per square foot per year. The Ada County region is seeing a an increase in rates. In the last 3 months, the median rate rose $2 per sqft per year. That's a 9% increase in rent.
In the last 90 days, 419 listings have been made available, so you'll want to check back regularly for new listings. About 3% of the listings in the Ada County are subleases, so you will probably have to consider a longer term lease. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,250 sqft. Most buildings in this region are close to 1 floors. Most buildings in this market were built in 1998 and are Class A.